package extend;

import org.junit.Test;

/**
 * @author : DuJiabao
 * @Date : 2021/3/11 15:35
 * @Project : java_learning
 * @File : null.java
 * @Desc :
 */
public class ExtendsTest {
  @Test
  public void test() {
    Person student = new Student();
    student = new Student();
  }
}
